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ppast.c
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ppast.c
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#include <assert.h>
#include "ppast.h"
#include "symbol.h"
#include "utils.h"
static void pp_efield(FILE *fp, int d, ast_efield_t efield);
static void pp_field(FILE *fp, int d, ast_field_t field);
static void pp_func(FILE *fp, int d, ast_func_t func);
static void pp_nametype(FILE *fp, int d, ast_nametype_t nametype);
static void indent(FILE *fp, int d)
{
fprintf(fp, "%*s", d+1, " ");
}
static char _ops[][12] = {
"PLUS", "MINUS", "TIMES", "DIVIDE",
"EQ", "NEQ", "LT", "LE", "GT", "GE",
"AND", "OR"
};
static void pp_op(FILE *fp, ast_binop_t op)
{
fprintf(fp, "%s\n", _ops[op]);
}
typedef void (*pp_func_t)(FILE *, int, void *);
static void pp_list(FILE *fp, int d, list_t list, string_t name, pp_func_t func)
{
fprintf(fp, "%s(\n", name);
for (; list; list = list->next)
func(fp, d, list->data);
indent(fp, d-1);
fprintf(fp, ")\n");
}
void pp_decl(FILE *fp, int d, ast_decl_t decl)
{
indent(fp, d);
switch (decl->kind)
{
case AST_FUNCS_DECL:
pp_list(fp, d+1, decl->u.funcs, "funcs_decl", (pp_func_t) pp_func);
break;
case AST_TYPES_DECL:
pp_list(fp, d+1, decl->u.types, "types_decl", (pp_func_t) pp_nametype);
break;
case AST_VAR_DECL:
fprintf(fp, "var_decl(%s\n", sym_name(decl->u.var.var));
if (decl->u.var.type)
{
indent(fp, d+1);
fprintf(fp, "%s\n", sym_name(decl->u.var.type));
}
pp_expr(fp, d+1, decl->u.var.init);
indent(fp, d+1);
fprintf(fp, "%s\n", decl->u.var.escape ? "TRUE" : "FALSE");
indent(fp, d);
fprintf(fp, ")\n");
break;
default:
assert(0);
}
}
void pp_expr(FILE *fp, int d, ast_expr_t expr)
{
indent(fp, d);
switch (expr->kind) {
case AST_NIL_EXPR:
fprintf(fp, "nil_expr()\n");
break;
case AST_VAR_EXPR:
fprintf(fp, "var_expr(\n");
pp_var(fp, d+1, expr->u.var);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_NUM_EXPR:
fprintf(fp, "int_expr(%d)\n", expr->u.num);
break;
case AST_STRING_EXPR:
fprintf(fp, "string_expr(%s)\n", expr->u.str);
break;
case AST_CALL_EXPR:
fprintf(fp, "call_expr(%s\n", sym_name(expr->u.call.func));
indent(fp, d+1);
pp_list(fp, d+2, expr->u.call.args, "call_args", (pp_func_t) pp_expr);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_OP_EXPR:
fprintf(fp, "op_expr(\n");
indent(fp, d+1);
pp_op(fp, expr->u.op.op);
pp_expr(fp, d+1, expr->u.op.left);
pp_expr(fp, d+1, expr->u.op.right);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_RECORD_EXPR:
fprintf(fp, "record_expr(%s\n", sym_name(expr->u.record.type));
indent(fp, d+1);
pp_list(fp, d+2, expr->u.record.efields, "efields", (pp_func_t) pp_efield);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_ARRAY_EXPR:
fprintf(fp, "array_expr(%s\n", sym_name(expr->u.array.type));
pp_expr(fp, d+1, expr->u.array.size);
pp_expr(fp, d+1, expr->u.array.init);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_SEQ_EXPR:
pp_list(fp, d+1, expr->u.seq, "seq_exp", (pp_func_t) pp_expr);
break;
case AST_IF_EXPR:
fprintf(fp, "if_expr(\n");
pp_expr(fp, d+1, expr->u.if_.cond);
pp_expr(fp, d+1, expr->u.if_.then);
if (expr->u.if_.else_)
{
pp_expr(fp, d+1, expr->u.if_.else_);
}
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_WHILE_EXPR:
fprintf(fp, "while_expr(\n");
pp_expr(fp, d+1, expr->u.while_.cond);
pp_expr(fp, d+1, expr->u.while_.body);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_FOR_EXPR:
fprintf(fp, "for_expr(%s,\n", sym_name(expr->u.for_.var));
indent(fp, d+1);
fprintf(fp, "%s\n", expr->u.for_.escape ? "TRUE" : "FALSE");
pp_expr(fp, d+1, expr->u.for_.lo);
pp_expr(fp, d+1, expr->u.for_.hi);
pp_expr(fp, d+1, expr->u.for_.body);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_BREAK_EXPR:
fprintf(fp, "break_expr()\n");
break;
case AST_LET_EXPR:
fprintf(fp, "let_expr(\n");
indent(fp, d+1);
pp_list(fp, d+2, expr->u.let.decls, "decls", (pp_func_t) pp_decl);
pp_expr(fp, d+1, expr->u.let.body);
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_ASSIGN_EXPR:
fprintf(fp, "assign_expr(\n");
pp_var(fp, d+1, expr->u.assign.var);
pp_expr(fp, d+1, expr->u.assign.expr);
indent(fp, d);
fprintf(fp, ")\n");
break;
default:
assert(0);
}
}
void pp_type(FILE *fp, int d, ast_type_t type)
{
indent(fp, d);
switch (type->kind)
{
case AST_NAME_TYPE:
fprintf(fp, "name_type(%s)\n", sym_name(type->u.name));
break;
case AST_RECORD_TYPE:
pp_list(fp, d+1, type->u.record, "record_type", (pp_func_t) pp_field);
break;
case AST_ARRAY_TYPE:
fprintf(fp, "array_type(%s)\n", sym_name(type->u.array));
break;
default:
assert(0);
}
}
void pp_var(FILE *fp, int d, ast_var_t var)
{
indent(fp, d);
switch (var->kind)
{
case AST_SIMPLE_VAR:
fprintf(fp, "simple_var(%s)\n", sym_name(var->u.simple));
break;
case AST_FIELD_VAR:
fprintf(fp, "field_var(\n");
pp_var(fp, d+1, var->u.field.var);
indent(fp, d+1);
fprintf(fp, "%s\n", sym_name(var->u.field.field));
indent(fp, d);
fprintf(fp, ")\n");
break;
case AST_SUB_VAR:
fprintf(fp, "sub_var(\n");
pp_var(fp, d+1, var->u.sub.var);
pp_expr(fp, d+1, var->u.sub.sub);
indent(fp, d);
fprintf(fp, ")\n");
break;
default:
assert(0);
}
}
static void pp_efield(FILE *fp, int d, ast_efield_t efield)
{
indent(fp, d);
if (efield)
{
fprintf(fp, "efield(%s\n", sym_name(efield->name));
pp_expr(fp, d+1, efield->expr);
indent(fp, d);
fprintf(fp, ")\n");
}
else
fprintf(fp, "efield()\n");
}
static void pp_field(FILE *fp, int d, ast_field_t field)
{
indent(fp, d);
fprintf(fp, "field(%s\n", sym_name(field->name));
indent(fp, d+1);
fprintf(fp, "%s\n", sym_name(field->type));
indent(fp, d+1);
fprintf(fp, "%s\n", field->escape ? "TRUE" : "FALSE");
indent(fp, d);
fprintf(fp, ")\n");
}
static void pp_func(FILE *fp, int d, ast_func_t func)
{
indent(fp, d);
fprintf(fp, "func(%s\n", sym_name(func->name));
indent(fp, d+1);
pp_list(fp, d+2, func->params, "params", (pp_func_t) pp_field);
if (func->result)
{
indent(fp, d+1);
fprintf(fp, "%s\n", sym_name(func->result));
}
pp_expr(fp, d+1, func->body);
indent(fp, d);
fprintf(fp, ")\n");
}
static void pp_nametype(FILE *fp, int d, ast_nametype_t nametype)
{
indent(fp, d);
fprintf(fp, "nametype(%s\n", sym_name(nametype->name));
pp_type(fp, d+1, nametype->type);
indent(fp, d);
fprintf(fp, ")\n");
}